the NationalNatural Science Foundation of China(Nos.40472034 ,49732070);Chinese National Key Project for Basic Research(2003CB716500);National 973 Project(G1988040800); China Geological Survey Project(200313000058).
Two types of granitic intrusives occur in the lower Paleozoic strata in north Qilian. One is the hornblende- bearing granitic body in Jingzichuan, characterized by the REE total of 90×10-6-106×10-6, LREE/HREE ratio ...